XmlUtil工具类：

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
 
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
 
import android.text.TextUtils;
import android.util.Xml;
 
/**
 * XML文件工具类，包含：将xml文件解析成实体集合、获取xml标签值、将标签值解析成实体集合
 */
public class XMLUtil {
 
	private XMLUtil(){}
	
	/*-
	 * XML文件解析成实体,不涉及到标签的属性值。
	 * @param xml	xml字符串文件
	 * @param clazz		对应实体的class文件
	 * @param tagEntity		
	 * 开始解析实体的标签，例如下面的实例中就是student

	 * < person >

	 *  	< student >

	 * 				< name >Lucy< /name >

	 * 				< age >21< /age >

	 * 		< /student >

	 * < /person >

	 * @return		返回解析的对应实体文件
	 */
	public static List xmlToObject(String xml, Class clazz, String tagEntity){
		List list = null;
		XmlPullParser xmlPullParser = Xml.newPullParser();
		InputStream inputStream = new ByteArrayInputStream(xml.getBytes());
		try {
			xmlPullParser.setInput(inputStream, "utf-8");
			Field[] fields = clazz.getDeclaredFields();
			int type = xmlPullParser.getEventType();
			String lastTag = "";
			T t = null;
			while (type != XmlPullParser.END_DOCUMENT) {
				switch (type) {
				case XmlPullParser.START_DOCUMENT:
					list = new ArrayList();
					break;
				case XmlPullParser.START_TAG:
					String tagName = xmlPullParser.getName();
					if(tagEntity.equals(tagName)){
						t = clazz.newInstance();
						lastTag = tagEntity;
					}else if(tagEntity.equals(lastTag)){
						String textValue = xmlPullParser.nextText();
						String fieldName = xmlPullParser.getName();
						for(Field field : fields){
							ReflectUtil.setFieldValue(t,field,fieldName,textValue);
						}
					}
					break;
				case XmlPullParser.END_TAG:
					tagName = xmlPullParser.getName();
					if(tagEntity.equals(tagName)){
						list.add(t);
						lastTag = "";
					}
					break;
				case XmlPullParser.END_DOCUMENT:
					break;
				}
			}
		} catch (XmlPullParserException e) {
			e.printStackTrace();
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return list;
	}
	
	/**
	 * 获取xml字符串标签中的属性值
	 * @param xml	xml字符串
	 * @param clazz		转换成对应的实体
	 * @param tagName	实体对应xml字符串的起始标签,如下面实例中的person标签

	 * < person name="Lucy" age="12">

	 *  	< student >

	 * 				< name >Lucy< /name >

	 * 				< age >21< /age >

	 * 		< /student >

	 * < /person >

	 * @return  返回属性值组成的List对象集合。
	 */
	public static List attributeToObject(String xml, Class clazz, String tagName){
		if(TextUtils.isEmpty(tagName))return null;
		List list = null;
		XmlPullParser xmlPullParser = Xml.newPullParser();
		InputStream inputStream = new ByteArrayInputStream(xml.getBytes());
		try {
			xmlPullParser.setInput(inputStream, "utf-8");
			int type = xmlPullParser.getEventType();
			T t = null;
			while(type != XmlPullParser.END_DOCUMENT){
				switch(type){
				case XmlPullParser.START_DOCUMENT:
					list = new ArrayList();
					break;
				case XmlPullParser.START_TAG:
					if(tagName.equals(xmlPullParser.getName())){
						t = clazz.newInstance();
						Field[] fields = clazz.getDeclaredFields();
						for(Field field : fields){
							String fieldName = field.getName();
							for(int index = 0;index < xmlPullParser.getAttributeCount();index++){
								if(fieldName.equals(xmlPullParser.getAttributeName(index))){
									ReflectUtil.setFieldValue(t,field,fieldName,xmlPullParser.getAttributeValue(index));
								}
							}
						}
					}
					break;
				case XmlPullParser.END_TAG:
					if(tagName.equals(xmlPullParser.getName())){
						list.add(t);
					}
					break;
				case XmlPullParser.END_DOCUMENT:
					break;
				}
				type = xmlPullParser.next();
			}
		}catch(Exception ex){
			ex.printStackTrace();
		}
		return list;
		
	}
	
	/**
	 * 获取Xml文件中的属性值
	 * @param xml	xml文件字符串
	 * @param tagName		标签名称
	 * @param attributeName		属性名称
	 * @return	返回获取的值，或者null
	 */
	public static String getTagAttribute(String xml, String tagName, String attributeName){
		if(TextUtils.isEmpty(tagName) || TextUtils.isEmpty(attributeName)){
			throw new IllegalArgumentException("请填写标签名称或属性名称");
		}
		XmlPullParser xmlPullParser = Xml.newPullParser();
		InputStream inputStream = new ByteArrayInputStream(xml.getBytes());
		try {
			xmlPullParser.setInput(inputStream, "utf-8");
			int type = xmlPullParser.getEventType();
			while(type != XmlPullParser.END_DOCUMENT){
				switch(type){
				case XmlPullParser.START_TAG:
					if(tagName.equals(xmlPullParser.getName())){
						for(int i=0; i < xmlPullParser.getAttributeCount();i++){
							if(attributeName.equals(xmlPullParser.getAttributeName(i))){
								return xmlPullParser.getAttributeValue(i);
							}
						}
					}
					break;
				}
				type = xmlPullParser.next();
			}
		} catch (XmlPullParserException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}
}